Reverse Engineering

Reverse engineering challenges give you a compiled file—or sometimes obfuscated script - and say, "Figure it out." There’s often no server, just something that hides a flag. Your job? Dissect and outsmart it.
Start by running it - see what it prints, what it asks, what it hides. Then go deeper: use strings, decompile it in Ghidra or IDA, or debug it line by line. If source is provided, it can help you trace the logic and find the flag.
Some challenges are friendly puzzles. Others throw obfuscation, anti-debugging, or fake logic at you. But every one is solvable - with the right tools and a bit of stubborn curiosity.